Re: Strings and reading from a file

[mcc@entropy.cs.princeton.edu (Martin C. Carlisle)]

I can't imagine!  Probably something more like:

function Next_Line(File : in Ada.Text_IO.File_Type := 
   Ada.Text_Io.Standard_Input) return String is
   Answer : String(1..256);
   Last   : Natural;
begin
   Ada.Text_IO.Get_Line(File => File,
      Item => Answer,
      Last => Last);
   if Last = Answer'Last then
      return Answer & Next_Line;
   else
      return Answer(1..Last);
   end if;
end Next_Line;

--Martin

In article <7hf2bc$imm$1@nnrp1.deja.com>,  <dennison@telepath.com> wrote:
>In article <7hevh1$g08$1@nnrp1.deja.com>,
>> Make the function recursive, and it can return a string of any length,
>> eliminating that nagging worry about strings that are longer than
>> whatever magic number you used in the function.
>
>Surely you don't mean (forgive me if Deja decides to throw away my
>formatting):
>
>function Next_Line return String is
>   Char : Character;
>   Next_Char : Character;
>   EOL  : Boolean;
>begin
>   Get (Char);
>   Look_Ahead (Next_Char, EOL);
>   if EOL then
>      return (1 => Char);
>   else
>      return Char & Next_Line;
>   end if;
>end Next_Line;
>
>I think we may have just smoked out a Lisp programmer...
>
>--
>T.E.D.
>
>
>--== Sent via Deja.com http://www.deja.com/ ==--
>---Share what you know. Learn what you don't.---


-- 
Martin C. Carlisle, Asst Prof of Computer Science, US Air Force Academy
carlislem@acm.org, http://www.usafa.af.mil/dfcs/bios/carlisle.html
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